Fiber-based artificial muscles with excellent actuation performance are gaining great attention as soft materials for flexible actuators; however, current advances in fiber-based generally suffer from high cost, harsh stimulation regimes, limiting deformations, chemical toxicity, or complex manufacturing processing, which hinder the widespread application of those engineering and practical usage. Herein, a facile cross-scale processing strategy is presented to construct commercially...

To enhance the quality of cotton webs during high-speed combing process, an analysis formation mechanism fiber bundle hooks was conducted. Predictive models for length and mass were developed based on parameters process lap. The measured by ImageJ software, while determined cutting-weighing method. accuracy predictive evaluated comparing theoretical values with actual values. Additionally, impact speed hooks, as well coefficient variation (CV) combed slivers investigated. results indicate...

The aim of this work is to explore a new method for producing color-alternation fancy yarn on modified compact spinning machine. Color-alternation kind with varying color effects along the axis. machine produces double-channel spinning, which has two coaxial back rollers in drafting unit. In process, different colored rovings are alternately fed into each roller produce alternant mean length connecting piece between solid pieces key research subject. Mathematical equations have been derived...

The main aim of this paper is to investigate the fiber distribution on surface a kind novel two-color yarn spun by regulating feeding ratio two colored rovings modified ring spinning frame, which named double-channel frame. ( SDR) and coefficient variation evenness CV sd ) strands in yarns was used quantify feature along based purpose-made image acquisition device corresponding processing method. effect weight ratio, roving position method mean SDR were studied, testing results Z-twist...

This work explored a novel method for producing sheath core-wrap staple yarn on modified ring spinning machine. The is new composite whose core layer and are both composed of fibers. In this paper, the conventional front roller machine was replaced by special-shaped roller, named coaxial different diameters. process, two colored cotton rovings were fed into back roller. Then they conveyed to diameters output at speeds. Finally, spun in under twist effect. covering effect properties critical...

An agent-aided system (AAS) for improving comprehensive properties of ring spun yarns with the aid viscosity and surface tension agent is reported in this paper. The mechanism humidification friction process AAS was investigated, related experiments were also carried out to verify analysis. results confirm that can attach fiber ends protruding a yarn body on assist twisting back into interior body, resulting significant reduction modified hairiness. Moreover, hairiness prominently reduced...

The traditional tension control method with as the target is to uniformly multiple warp beams and has low accuracy. Simultaneously, it difficult install an independent sensor for a single beam achieve closed-loop control, due space limitation. Combined theoretical model, this paper proposes novel unwinding of by taking length using self-developed turns measuring device. First, dynamic model between different factors was established in study. Furthermore, influence radius, speed winding...

Fabrics with good shape-retention properties are strongly expected to improve the aesthetic feeling, comfort and easy-care performance of clothing in daily life, efficient characterization wrinkle recovery property fabrics is a necessary approach facilitate development garments shape retention. Here, double extraction method was presented evaluate fabric wrinkling based on wrinkling-induced residual force–displacement curves. The correlation analysis used determine applicable evaluation...

An adhesive-aided ring spinning was developed to improve cotton yarn quality through the wetting and adhesion effect of an adhesive solution, namely, sodium carboxymethyl cellulose solution on fibrous strand in formation zone during process. The mechanism with analyzed, effects two factors, that is, speed ratio (the linear surface velocity output speed) concentration, performance are investigated. experiment results reveal concentration 0.7% can significantly reduce hairiness indicated by S...

The self-adaptive nature of smart textiles to the ambient environment has made them an indispensable part emerging wearable technologies. However, current advances generally suffer from complex material preparation, uncomfortable fitting feeling, possible toxicity, and high cost in fabrication, which hinder real-world application materials textiles. Herein, humidity-response torsional tensile yarn actuators twisted coiled structures are developed using commercially available, cost-effective,...

The four-roller compact spinning system is widely used today and considered an improvement over traditional ring because of its excellent yarn properties. Reducing energy consumption in has always been a key issue for the textile industry. This paper proposed method installing air guide on to reduce consumption. Four types guides were designed with different side shapes (Type-N, Type-L, Type-R, Type-LR), airflow characteristics converging zone analyzed using numerical simulation. In...

A novel method for producing cotton/polyester staple core-spun yarns was introduced in this study to fully exploit the advantages of composite yarns. coaxial roller with different diameters installed on ring spinning machine assist production yarn. In addition, given challenge accurately measuring twist yarn using a traditional tester, image technology employed measure twists core and sheath layers. Models were established correlate process (the set machine) layers The effects proportion...

Cotton warp sizing is the precondition for guaranteeing smooth weaving. Pre-squeezing one of processes in modern multi-squeezing roll machines, which plays a positive role rational distribution material sized yarn. However, effect pre-squeezing force on properties yarn not clear. In this study, mixed size liquor starch acetate and PVA 088-05 was modified to reduce its viscosity at room temperature; subsequently, yarns were by single-sizing-roll triple-roll-type machine. The pick-up quality...

The coupling model between unwinding tension and various factors is crucial for understanding warp beam characteristics designing control systems. However, currently established models are simple fail to reflect the complexity of actual process. Additionally, traditional unified PID method multiple beams difficult ensure stable single beam, negatively impacting quality efficiency sizing To address these issues, tension, radius, speed, turns air pressure during process were validated using...

2012年6月13日和7月10日华东地区部分地磁台垂直分量日变形态出现双低点异常，首次异常出现后37天，于7月20日发生江苏扬州M 4.9地震，震中位于低点位移分界线附近。分析认为，在强震前由于应力变化，引起孕震体环境中介质电导率等电磁性质发生改变，区域地磁场垂直分量日变曲线出现相位和幅度变化，说明地磁垂直分量日变双低点异常与地震的孕育和发生相关。